2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/100471In a recent Comment, Kolf et al. (cond-mat/0503669) state that our analysis of the Fano resonance for Anderson impurity systems [Luo et al., Phys. Rev. Lett 92, 256602 (2004)] is incorrect. Here we want to point out that their comments are not based on firm physical results and their criticisms are unjustified and invalid.1 page, 1 figure, to appear in PRLStrongly Correlated ElectronsMesoscale and Nanoscale Physicstext